mines are found between veins. The initial gallery is narrow and
then forms an orange-brown blotch (British
at the underside of the leaf. The mine is a small compact corridor,
rather strongly widening towards the end, mostly in a vein axil.
Colour of the mine often orange. Frass in a broad, irregular central
line (Bladmineerders van Europa).
Larva: The larvae of moths have a head capsule and chewing mouthparts with opposable mandibles (see video of a gracillarid larva feeding), six thoracic legs and abdominal legs (see examples).
Bright yellow to orange. See Briolini (1961a) and Johansson et al.
(1990a) for a description of the larva (Bladmineerders van Europa).
Pupa: The pupae of moths have visible head appendages, wings and legs which lie in sheaths (see examples).
The adult is not illustrated in UKMoths (check for update). The male and female genitalia are illustrated by the Lepidoptera
In the, mainly older, literature repeatedly is spoken also of Cydonia
oblonga, next to Cotoneaster nebrodensis and Sorbus
aria. The only nepticulid associated with Cydonia is
but it is hardly conceivable that incognitella could be confused
with that species (Bladmineerders van Europa).
Hosts in Great Britain & Ireland:
of year - larvae: June-July, October-November (British
of year - adults: Currently unknown.
in Great Britain & Ireland: Britain including Caernarvonshire (VC49),
Cheshire (VC58), East Kent (VC15), East Norfolk (VC27), East Suffolk (VC25), Glamorganshire (VC41), Herefordshire (VC36),
Monmouthshire (VC35), North Hampshire (VC12), Shropshire (VC40), Staffordshire (VC39), West Gloucestershire (VC34),
West Norfolk (VC28), West Suffolk (VC26) and Worcestershire (VC37) (NBN
See also British
leafminers distribution map.
NBN Grid Map:
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elsewhere: Widespread in continental Europe including Austria,
Belarus, Belgium, Bosnia and Herzegovina, Corsica, Croatia, Czech
Republic, Danish mainland, Finland, French mainland, Germany, Greek
mainland, Hungary, Italian mainland, Latvia, Lithuania, Luxembourg,
Poland, Portuguese mainland, Romania, Russia - Central and Northwest,
Sardinia, Slovakia, Slovenia, Spanish mainland, Sweden, Switzerland,
The Netherlands, Ukraine and Yugoslavia (Karsholt and van Nieukerken
in Fauna Europaea).
NBN Interactive Grid Maps of known host species:
British and Irish Parasitoids in Britain and elsewhere: